HER-2 negative

Interventions to prevent or treat CRCI are needed to improve the long-term quality of life of these patients treated with chemotherapy. ClinicalTrials.gov Identifier: NCT01272037.

We summarize intensive treatment methods for T1N0M0 HR+/HER2- breast cancer patients, which extend beyond the standard 5-year tamoxifen (TAM)-based adjuvant ET. These methods include intensive ET, poly(ADP-ribose) polymerase (PARP) inhibitors, other targeted therapies, antibody-drug conjugates, oral chemotherapy, immunotherapy, and enhanced prevention of bone metastasis. This review provides a foundation for developing personalized adjuvant treatment strategies for patients with T1N0M0 HR+/HER2- breast cancer.

This study demonstrates CHCP as a non-thermal (24 °C), non-contact plasma-based IRE platform which induces controlled membrane permeabilization and selective cancer cell death. CHCP offers a translational strategy to eradicate residual tumor cells at the surgical margins, and prevent local recurrence, positioning it as a versatile adjunct in precision surgical oncology.

The discovered LPP phenotype defines a small, high-risk subset warranting external validation. Given the retrospective, single-system design of the study, it is imperative to interpret the discovered phenotype features as hypothesis-generating, rather than as definitive evidence.

The results warrant further investigation on a larger cohort. This framework can be a useful surrogate for participants for whom ODX testing is neither affordable nor available.

Conversely, T-DXd administered due to the presence of HER2-low showed excellent effectiveness. Performing a re-biopsy is crucial due to the possible loss of estrogen receptors, which would require a change in therapeutic strategy no longer based on endocrine therapy. In cases that remain luminal, knowledge of the mutational profile may help to offer patients novel targeted treatments.

P1, N=168, Completed, AbbVie | Active, not recruiting --> Completed | Trial completion date: Jun 2025 --> Sep 2025 | Trial primary completion date: Jun 2025 --> Sep 2025

Patients with metastatic HR+HER2- IBC demonstrated a shorter time on treatment suggesting shorter duration of response on CDKI + HT, which is markedly inferior to reported data for non-IBC patients from phase III trials.

gBRCA1 variants were linked to the prevalence of TNBC type and HER2 zero status. In contrast, gBRCA2 cases had a higher rate of HR + and HER-low breast cancer.

nal-IRI demonstrated IC activity in HER2[-] BC with BMs. While overall efficacy was limited and long-term outcomes remain poor, these results highlight the unmet need in this challenging population and support the importance of developing more treatment strategies.

P2, N=60, Active, not recruiting, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins | Trial completion date: Dec 2025 --> Jun 2026 | Trial primary completion date: Dec 2025 --> Jun 2026

Patients with HR+HER2- ABC showed impaired cognitive function at initial diagnosis compared to cancer-free controls. During first-line endocrine treatment with aromatase inhibitors, cognitive function declined in a small group of patients, regardless of the addition of CDK4/6i.